Method of making ribbed insoles



April 16, 1935. F. F. ENO

METHOD OF MAKING RIBBED INSOLES Filed June 9, 1933 2 Sheets-Sheet 1April 16, 1935.

F. F. ENO

METHOD OF MAKING RIBBED- INSOLES Filed June.9, 1935 2 Sheets-Sheet 2Patented Apr. 16, 1935 ,99s,25 METHOD OF MAKING RIBBED msoLEs.

Frank F. Eno,

Brookline, Mass.

Application June 9, 1933, Serial No. 375949 2 Claims.

Heretofore it has been proposed to use as a sub- 'stitute for thechanneled insole employed in shoe making an insole having astitch-receiving rib distinct from the insole itself and attachedthereto by stitches passing through the rib and the insoe or through afabric envelope enclosing such r By following the teaching of thisinvention an insole is provided having an upstanding rib distinct fromthe insole body and Secured thereto by means other than stitching. Inthis way the cost of the shoe is reduced by eliminating the stitchingoperation and by rendering unnecessary a Sock lining of leather or othermaterial that must be cemented or otherwise Secured to the upper ortread surface of the insole to provide a smooth bearing for the foot.The sewirg rib is Secured to the-insole by adhesive only and in thepreferred form of my invention a core member of any suitable material,for example leather, leather board, or cord, is laid on an unchanneledinsole near the edge thereof with an adhesivefaced strip which is bentaround the 'top and sides of the core member and the edge portionsthereof which. extend laterally from the base of the core memberare'adhesiveiy secured to one 'face of the insole..

By this construction cheaper, lighter, more flexible material may beemployed for the insole than heretofore has been feasible for achanneled insole.

The object of this invention is to provide a method of making an' insolehaving the characterstics above specified by simultaneously laying on anunchanneled insole, near the edge thereof, a core member of any suitablematerial and a strip of flexible material having adhesive over one face,and then progrssively bending the strip around and adhesively securingthe same to the top and sides of the core member and adhesively securingtheedge portions of said strip .which extend laterally from the'base ofthe core to one.

face of the insole.

A shoe made with this improved insole is lighter and more flexible thanshoes involving in their Construction a channeled insole, and the costof manufacture of the same is materially reduced. In the drawingsaccompanyng and forming a part of this specification Figure 1 is aprespective view of an insole manufactured according to the methodhereof, particularly adapted for a cemented shoe:

Fig. 2 is a transverse section onan enlarged scale of the ball portionof the insole shown in Fig. 1;

Fig. 3 is a perspective view of an insole manufactured according to themethod hereof, particularly adapted for a welted shoe;

Fig. 4 is a transverse section on an enlarged scale of the insole shownin Fig. 3; 5

Fig. 5 is a longitudinal section of a modified form of insole embodyingmy invntion;

Flgs. 6, 7 and 8 are perspective views showing various stages in theprocess of making a shoe having a cemented outsole;

Figs. 9, 10 and 11 are perspective views showing various stages in theprocess of making a shoe having 'a stitched outsole.

In the particular drawings selected for more -fully disclosing theprinciple underlying this in- 15 vention, 20 represents an unchanneledinsole which may be formed of leather, felt, leather board, or the like,and if of leather, it may be much thinner than would be required for achanneled insole and therefore the forepart of 20 the shoe will be moreflexible than if a channeled leather insole were used and the shoe willbe correspondingly lighter and cheaper. A composite sewing rib 2!extending around the insole body near the edge thereof, as indicated inFig. 3, or only part way around, as shown in Fig. 1, is permanentlyattached to the insole body'in the following manner: A core member '22and a flexible, adhesive faced strip 23 are simultaneously applied tothe under face of the insole, preferably by a taping machine, and as theinsole is moved through the machine, the strip is progressively bentaroundthe top and sides of the core and simultaneously therewith theedge portions 24, 24 are bent out laterally from the base of the core.and caused to adhere to said under face of the insole by means of theadhesive over the inner face of the strip. The core member preferablyconsists of a strip of leather board, 'although any suitable material'may be employed;

Preferably the rib is inclined slightly away from the edge of the insolebodyas indicated in* Figs. 1 to 4. While the improved method of makingribbed insoles may be carried out by hand, preferablya taping machine ofthe type shown in the patent to Andrew R. Ridderstrom, 1,794,204,February 24, 1931, is employed, in which case a suitable guide'willbeused for giving the rib the desired inclination. i

For making a welted shoe in which the ontsole is stitched to the welt,the rib 2|- preferably extends around the toe portion of the insole butfor a shoe 'of the cemented outsole type the rib preferably stops shortof the toe portion.

fabric As indicated in Fig. 3 a reinforcmg sheet 25 may be cemented tothat portion of the surface of the insole body enclosed by the sewingrib and the edge portion 26 thereof preferably is carried up the innerside of the rib so that when a welt is stitched to' the marginal portionof the i upper and the rib, the stitches will pass through theupstanding edges of the reinforcing sheet, as hereinafter more fullyexplained.

If desired the shank and heel portion of the insole 20 may be reinforcedby a sheet 21 of any suitable material which 'preferably is adhesivelySecured thereto and 'the forward edge thereof skived, as indicated at21'.

The insole above described may be used in making shoes of various types.Referring to Figs. 6, 'I and 8 showing the use of said insole for makinga shoe having a cemented outsole, 28 repre'sents the shoe upper, themarginal portion of which is Secured in lasted positionto the rib 2! bymeans of staples 29, by way of example, although it will be understoodthat any suitable means may be'employed in place of said staples. Theportion 30 of the upper overlying the edge portion of the insole betweenthe edge thereof and the base of the rib is cemented to the insole, thenthe surplus material is trimmed from the rib and the margin of' theupper, as indicated in Fig. 7, the plane of the remaining portion of therib being but slightly above the plane of the lower face of the insole,as indicated at 3I. The outsole 32 is then E cemented to the shoebottom, a layer of filler 33 being int posed between the insole andoutsole, if desired. v

Referring to Figs. 9, 10 and 11 showing the use of my improved insolefor making a welted shoe having a stitched outsole, the marginal portionof the upper is temporarily Secured in lasted position to the rib bystapies 29, or otherwise, and then the welt 34 is stitched to themarg'inal portion of the upper, the rib. and the upstanding edge 26 oi'.the reinforcing sheet 25, if the latter is employed, as indicated at34'.

The surplus material is then trimmed from the rib, the marsin -of the,upper, the portion of the welt adjacent thereto and the' upstandingedge 26 aforesaid and then "the outsole 32 is stitched to said welt, asshown in Fle. 11.

It will be obvious without further illustration that the insole may beusedfor making a shoe having a cemented outsole by atitching themarginaportionoftheuppertotherib,without using a welt, after the samehas been stapled or otherwise temporarily secured to the rib, instead ofcementing the same to the edge of the insole, as above described inconnection with Fig. 6.

Thoseskilledintheartofmakingshoeswill recognize that in any type of shoemanufactured been produced according .to the method "nerein describedand claimed.

Having thus described the novel method and one mode of practising itwhen employing its underlying principles, yet recognizing that somemodifications and changes may be made without departing from its spiritand scope, what is claimed as new, isz

1. The method of making ribbed insoles which comprises supplying anunchanneled insole, a strip of 'flexible material having adhesive overone face and of such width aa to be capable of being folded to form asewing rib between inner and outer base flanses and a core member forstrengthening said fold, then progressively fo1d-` ing the adhesive face-of said flexible strip closely about and against the emes and top ofthe core while 'simultaneously forming said outtumed base flanges thuscementing the core within the fold and progressively forming a unitary,cored sewing rib presenting two base flanges having an adhesive underface and continuously laying said sewing rib as it is progressivelyformed on one face of the insole adjacent to its edge under suflicientpressure progressively upon said flanges to cause adherence to theinsole and to retain the cored rib in upstanding position thereonwithout additional securing means.

2'. The method of making ribbed insoles according to claim 1 in whichthe encased core of said sewing rib is bent to an oblique positionrelative to the plane of the insole in a direction to form' a sewing ribinclined away from the edge of the insole.

FRANK F. ENO. i

